21168550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1123}}^1$

素因数の和:1177

約数の個数: 48

約数和(自身を含む): 43903440

約数和(自身を除く): 22734890

約数列:

[1, 2, 5, 10, 13, 25, 26, 29, 50, 58, 65, 130, 145, 290, 325, 377, 650, 725, 754, 1123, 1450, 1885, 2246, 3770, 5615, 9425, 11230, 14599, 18850, 28075, 29198, 32567, 56150, 65134, 72995, 145990, 162835, 325670, 364975, 423371, 729950, 814175, 846742, 1628350, 2116855, 4233710, 10584275, 21168550]

約数ペア:

[(1, 21168550), (2, 10584275), (5, 4233710), (10, 2116855), (13, 1628350), (25, 846742), (26, 814175), (29, 729950), (50, 423371), (58, 364975), (65, 325670), (130, 162835), (145, 145990), (290, 72995), (325, 65134), (377, 56150), (650, 32567), (725, 29198), (754, 28075), (1123, 18850), (1450, 14599), (1885, 11230), (2246, 9425), (3770, 5615)]